Haven't timed exactly, but I'm guessing around 5 times realtime. Depends also on the interface you're using: internal pcmcia-slot or usb connection.
And it's not just a simple copy process: copying the files using the P2 Viewer or Windows Explorer is faster than consolidating. usb P2 drive to usb external drive at about 3x realtime consolidating, and 5x copying. No idea why consolidating is slower, because in essence, it is just copying.